FR2603105A1 - Method and device for local and instantaneous measurement of the absolute concentration of a chemical species in a reactive medium - Google Patents

Method and device for local and instantaneous measurement of the absolute concentration of a chemical species in a reactive medium

Info

Publication number
FR2603105A1
FR2603105A1 FR8611857A FR8611857A FR2603105A1 FR 2603105 A1 FR2603105 A1 FR 2603105A1 FR 8611857 A FR8611857 A FR 8611857A FR 8611857 A FR8611857 A FR 8611857A FR 2603105 A1 FR2603105 A1 FR 2603105A1
Authority
FR
France
Prior art keywords
reactive medium
along
chemical species
predetermined direction
sense
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR8611857A
Other languages
French (fr)
Other versions
FR2603105B1 (en
Inventor
Denis Stepowski
Leon Stepowski
Pierre Stepowski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Centre National de la Recherche Scientifique CNRS
Original Assignee
Centre National de la Recherche Scientifique CNRS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Centre National de la Recherche Scientifique CNRS filed Critical Centre National de la Recherche Scientifique CNRS
Priority to FR8611857A priority Critical patent/FR2603105B1/en
Publication of FR2603105A1 publication Critical patent/FR2603105A1/en
Application granted granted Critical
Publication of FR2603105B1 publication Critical patent/FR2603105B1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N21/6402—Atomic fluorescence; Laser induced fluorescence
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N21/6408—Fluorescence; Phosphorescence with measurement of decay time, time resolved fluorescence

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

According to the invention, a first laser beam 1 coming from a laser generator 101 tuned to an absorption line of the species to be measured is made to propagate in the reactive medium 3 along a predetermined direction X' X and in a first sense, and a second laser beam 2 coming from the same tuned laser generator 101, but having a small predetermined delay, is made to propagate along the said predetermined direction, and in a sense opposite to the said first sense, a portion of the light energy which has been absorbed along the excitation beams 1, 2 and has caused the emission of fluorescence is collected along the said predetermined direction at two separate points A and B of the reactive medium 3 which are very close together, the fluorescence emitted by the two separate points A, B is measured in order to determine, for each of these two points A, B, a pair of fluorescence signals which are shifted in time, and the absolute concentration of the absorbent chemical species present in the reactive medium 3 is deduced from the measurements of the two pairs of fluorescence signals.
FR8611857A 1986-08-19 1986-08-19 METHOD AND DEVICE FOR LOCAL AND INSTANT MEASUREMENT OF ABSOLUTE CONCENTRATION OF CHEMICAL SPECIES IN A REACTIVE MEDIUM Expired FR2603105B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8611857A FR2603105B1 (en) 1986-08-19 1986-08-19 METHOD AND DEVICE FOR LOCAL AND INSTANT MEASUREMENT OF ABSOLUTE CONCENTRATION OF CHEMICAL SPECIES IN A REACTIVE MEDIUM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8611857A FR2603105B1 (en) 1986-08-19 1986-08-19 METHOD AND DEVICE FOR LOCAL AND INSTANT MEASUREMENT OF ABSOLUTE CONCENTRATION OF CHEMICAL SPECIES IN A REACTIVE MEDIUM

Publications (2)

Publication Number Publication Date
FR2603105A1 true FR2603105A1 (en) 1988-02-26
FR2603105B1 FR2603105B1 (en) 1988-12-02

Family

ID=9338379

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8611857A Expired FR2603105B1 (en) 1986-08-19 1986-08-19 METHOD AND DEVICE FOR LOCAL AND INSTANT MEASUREMENT OF ABSOLUTE CONCENTRATION OF CHEMICAL SPECIES IN A REACTIVE MEDIUM

Country Status (1)

Country Link
FR (1) FR2603105B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0762114A2 (en) * 1995-09-07 1997-03-12 Basf Aktiengesellschaft Apparatus for parallel two-photon fluorescence-correlation-spectroscopy measurements of a plurality of samples and its application to active-substance screening

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US397155A (en) * 1889-02-05 Tooth for horse hay-rakes
US4362388A (en) * 1980-11-17 1982-12-07 Bethlehem Steel Corp. Remote measurement of concentration of a gas specie by resonance absorption

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US397155A (en) * 1889-02-05 Tooth for horse hay-rakes
US4362388A (en) * 1980-11-17 1982-12-07 Bethlehem Steel Corp. Remote measurement of concentration of a gas specie by resonance absorption

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0762114A2 (en) * 1995-09-07 1997-03-12 Basf Aktiengesellschaft Apparatus for parallel two-photon fluorescence-correlation-spectroscopy measurements of a plurality of samples and its application to active-substance screening
EP0762114A3 (en) * 1995-09-07 1998-05-06 Basf Aktiengesellschaft Apparatus for parallel two-photon fluorescence-correlation-spectroscopy measurements of a plurality of samples and its application to active-substance screening

Also Published As

Publication number Publication date
FR2603105B1 (en) 1988-12-02

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